Q: 134 (IAS/1995)

In the given diagram, circle A represents teachers who can teach Physics, circle B represents teachers who can teach Chemistry and circle C represents those who can teach Mathematics. Among the regions marked p, q, r ........ the one which represents teachers who can teach Physics and Mathematics but not Chemistry, is
question_subject: 
Logic/Reasoning
question_year: 
1995
question_exam: 
IAS
question_sub_subject: 
Reasoning
question_topic: 
Analytical
stats: 
0,536,216,56,536,120,40